Third quarter: Oregon 48, South Dakota 13

What happened: Jeff Lockie replaced Marcus Mariota at quarterback and the Ducks’ offense took its foot off the gas, going scoreless in the quarter. Lockie was 6 of 6 for 60 yards.

The big play: Freshman Charles Nelson scored on a 50-yard punt return midway through the quarter.

Momentum swing: Nelson’s return was the only score of the quarter for either team.

Beyond the boxscore: One of the more notable subs to play in the third quarter was WR Johnathan Loyd, the former UO basketball player who is playing his first year of football. He had one catch for two yards.